TESS

Time-sharing Experiments for the Social Sciences (TESS) has suspended operations and is not accepting new research proposals. When active, it allowed researchers to field experiments for free on a representative sample of U.S. adults via the NORC AmeriSpeak Panel, with the internal validity benefits of controlled experiments and large, diverse participant pools. TESS archives projects fielded since 2009.

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0 shouts Added Sep 23, 2026 tessexperiments.org
www.tessexperiments.org/
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